Gas or electric reflector.



UNITED STATES PATENT OFFICE.

RYERSON D. GATES, OF `OAKPARK, ILLINOIS, ASSIGNOR OF ONE-HALF TO PHILETUS W. GATES,` OF'CI-IICAGO, ILLINOIS.

GAS OR ELECTRIC REF-LECTOR.

SPECIFICATION forming part of Letters :Patent No. 712,517, dated November 4, 1902. Application tiled March 12,.19Q2. Serial No. 97,829. (Nd model.) l

Qro ctZ whom it may conocerla:

Be t known that I, RvERsoN D. GATES, a citizen of the United States, residing at Oakpark, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in GasorElectric Reflectors, of which the followingr is a specification.

This invention relates particularly to re llectors adaptedfor use in connection with gas-burners.V and especially to a construction thereof by which therays of light areso distributed or diffused as tobreak up the shadows or the larger portion thereof, all of which will more fully hereinafter appear.

The principal object of the invention is to provide a simple, economical, and eflicientre-l flector for gas-burners of the Welsbach typenV A further object of the invention is to pro` vide a reiiector for gas-burners with a multplicity of reflecting-surfaces by which the rays of light may be distributed in such a manner as to break up the shadows.

Further objects of the invention will ape pear from an examination of the drawings and the following description and claims. l

The invention consists principallyin a re-1 flector composed ofa multiplicity of surfaces occupying dierent planes.

The invention consists,further,in a reflector in which there are combined two or more curved surfaces joined together by a multiplicity of angular surfaces.

The invention consists,further,in a reliector in which there are combined two or morel curved su rfaces tangentially connected each` to the other and joined together in substan-l tially radial lines by a multiplicity of angu-` lar surfaces. i

The invention consists, furtherand finally,` in the features, combinations, and details of construction hereinafter described .and claimed.

In the accompanying drawings, Figure l is a plan view of a reflector constructed in accordance with these improvements looking at it frornabove, and Fig. 2 a side elevation of the same.

In the art to which this invention relates it is well known that the Welsbach burner when provided'with the usual mantle casts a very intenselight and that when used with an `reflected light is not uniform.

'each having a concave under surface.

designated as the upper set. *setsof projections extend outward radially 'plane downward-to different planes. `of the projecting portions of the lower set is 9o ordinary reliector the light is so reflected that it casts more or less of a shadow immediately underneath the burner, thus partially destroying the eticiency of the light without the high lights-in other words, the

`'This invention, therefore, isintended primarily to obviate this objection by providing a reflector of suitable construction with twomain curved 6o Surfaces brought tangentially together and also joined together with radially-arranged angular pieces having reflecting-surfaces arranged to diffuse the light and break upV the usual shadows incident to the use of the Welsbach light, all of which will more fully hereinafter appear.

In constructing a reflector ,in accordance with these improvements I provide a main central portion a, having a perforation b at 7o the central part thereof, through which the chimney of the lamp passes.- This main cen- -tral portion is curved, as shown in Fig. 2,

and radiating therefrom are two main curved surfaces c and d eccentric to one another, but becoming tangent and coincident with -the centrally-disposed curved surface 0..

These curved surfaces are formed of a pluralityof radially extending curved pieces For So convenience the radially-extending portions `which form what I term the lower curved surface may be said to constitute a lower 'set of projecting portions and those which constitute the upper curved surface may be These two from the 'central portion and from the same Each provided with a concave under surface, which `extends along and conforms to one and the ,same spherical angle common to all of that set, and as these pieces are separated they form an interrupted outline of such spherical angle. The radially-extending portions of the upper set may also have concave under surfaces which extend along and conform to one and the same spherical angle common to this set, but tangent to the angle of the lower loo set. It will thus be seen that each set de scribes the an-gle of a geodetic sphere, that described by the lower set being smaller than that of the upper set, and that both spheres thus partially described have their centers in alinement with the axis and upon the con.

cave side of the reflector. The radially-extending pieces of the lower set accordingly reflect the light more directly to the vcenter than do those of the upper set. The two sets of reflecting surfaces being ou different spherical angles, as shown in. the drawings, it will be seen that they refiect the light from the burner in different directions, so as to largely break up the shadows incident to shades having but one curved surface, and in order to further effect this advantageous ,result are joined together by radially-arranged angular pieces e. The pieces c, which form the upper curved surface, are preferably narrower than the pieces CZ, which forln the lower curved surfaces, so that in connecting the surfaces together the pieces e must occupy an angular as well as a radial position, and thereby act to reflect a certain portion of light and tend to break up.the

shadows, all of vwhich will be understood and appreciated by those skilled in the art.

I claiml. As a new article of manufacture, a re- Hector provided with two eccentric curved surfaces each formed of a plurality of curved pieces the lower set having concave under surfaces andthe upper set extending ou tward above the lower set, all joined together in substantially radial lines by a multiplicity of angular pieces all having reflecting-surfaces, substantially as described.

2. As a newarticle of manufacture, a reflector provided with a curved central portion, two eccentric concave surfaces each formed by a set of curved pieces extending out radially from the curved central portion and coincident at their inner ends with each other and the central curved portion, each of the radial pieces of the'lower set having a concave lower surface extending along and in conformity with one and the same spherical angle, and a plurality of radially-arranged angular pieces both sets of radially-projecting portions having reliecting-surfaces, substantially as described.

3. As a new article of manufacture, a re- Hector provided with a curved central portion, an upper curved surface the inner portion of which is substantially coincident therewith composed of a plurality of radially-arranged curved pieces, a lower curved surface eccentric with the upper one, the inner portion of which is connected with the-central curved portion and tangent with the inner ends of the upper curved portion formed of a plurality of radially-arranged curved strips sub-l stantially wider than the strips of the upper portion, all extending along and having a lower concave surface in conformity With one and the same spherical angle, and a plurality of radially-arranged angular pieces connecting the curved pieces of the eccentric surfaces together-all having reliectin g-surfaces, substantially as described.

4. As a new article of manufacture a reflector consisting of a central portion, two sets of integral projecting portions extending out- 'ward from such central portion and from the same plane downward to dierent planes, the members of the lower set all having concave lower surfaces, and integral connecting portions arranged at an angle to and in connection with both sets-of projecting portions, substantially as described.

y 5. As a new article of manufacture a relector consistingof a central portion, two sets of integral projecting portions extending outward from the central portion and from the same plane downward to different planes, the members of the lower set all having concave lower surfaces extending along and in conformity with one and the same spherical angle,and integral connecting portions arranged at an angle to and in connection with both sets of projecting portions, substantially as described.

6. As a new article of manufacture a re- Hector consisting of a central portion, two sets of integral projecting portions extending outward from the central portion and from the same plane downward to different planes, the members of the lower set all having concave lower surfaces extending along and. in conformity with the spherical angle of a sphere having its center at the axial center and upon the convex side of such refiector, and integral connecting portions' arranged at an angle to and in connection with both sets of the radially-projecting portions, substantially as described.

RYERSON D. GATES.

IOO 

